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To preface, I'm relatively new with linux-based systems, so please try to keep things relatively simple.

Before experiencing any issues, I had an 8GB flash drive that was recognized by

sudo fdisk -l

as /dev/sdb. The issue happened when I tried to copy a file onto the drive using

sudo dd if=[File] of=/dev/null bs=512k

where [File] was a file in my working directory. I realized I had done something I didn't want to do and force closed the terminal before the task finished. When I reopened it and checked

sudo fdisk -l

again, it listed the drives and devices, but got stuck trying to find /dev/sdb. It simply doesn't show up and won't let me type into the terminal any further. I believe I may have corrupted the drive by mistake.

Is there any way to get the drive back or do I need to buy a new one?

EDIT:

I tried 

gksu gparted

and it requires admin password. I thought I defined that when I put Ubuntu on the computer, but the password isn't working.

cpage19
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  • Unplug the drive and put it back in, then use gksu gparted to locate it and create a new partition table for msdos, after that create a new volume on it and you should get your drive back. but the data on it will be lost I assume. – Videonauth Oct 05 '17 at 13:44
  • I think you just need to format it. Needless to say, there is no need to buy a new one. – mikewhatever Oct 05 '17 at 13:52
  • Use the password for your ordinary user (for gksu), the same password as you use to log in as your ordinary user. – sudodus Oct 05 '17 at 14:13
  • If gparted does not solve the problem for you, try mkusb and analyze the problem according to the following link, https://askubuntu.com/questions/144852/cant-format-my-usb-drive-i-have-already-tried-with-mkdosfs-and-gparted/933035#933035 – sudodus Oct 05 '17 at 16:22

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